feat: add edit client page (#1147)

Fixes: #1146

src/app/clients/common-resolvers/client-and-template.resolver.ts

@@ -0,0 +1,31 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+/** Custom Services */
+import { ClientsService } from '../clients.service';
+
+/**
+ * Clients data and template resolver.
+ */
+@Injectable()
+export class ClientDataAndTemplateResolver implements Resolve<Object> {
+
+  /**
+   * @param {ClientsService} ClientsService Clients service.
+   */
+  constructor(private clientsService: ClientsService) { }
+
+  /**
+   * Returns the Clients data and template.
+   * @returns {Observable<any>}
+   */
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const clientId = route.paramMap.get('clientId');
+    return this.clientsService.getClientDataAndTemplate(clientId);
+  }
+
+}